Find a char or string in a NSString is very simple, we have for example a NSString called thestring that contains “auto and bike”. To find the word and, the code is here: [crayon-5c1a0c3d9110b779415146/]

Put in .h file, the delegate and datasource where it has been declared UIPickerView: [crayon-5c1a0c3d918d8984528565/] Later in .m file, declare UIPickerView, with delegate and datasource = self: [crayon-5c1a0c3d918ea955298875/] As the last thing, put...